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Paper Abstract and Keywords
Presentation 2007-10-18 11:30
A Study on Structure and Adaptive Algorithm of Adaptive Notch Filter Based on Expansion of Fourier Sine Series
Masaki Kobayashi, Chi Wang (Chubu Univ.), Yoshio Itoh (Tottori Univ.) CAS2007-41 NLP2007-69
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we consider an adaptive notch filter that realizes the phase shift of the all-pass filter by the Fourier sine series expansion. The method to control the weights of the all-pass filter composed by IIR filter is known well.However, these adaptive notch filter have not been put to practical use since the inevitable stability problem of IIR filter and the problem concerning the determination method of the degree of IIR filter exist. The proposed adaptive notch filter is always stable since the all-pass filter is composed by an exponential filter. Moreover, the adaptive algorithm is a simple gradient based algorithm and the convergence of weights is guaranteed. The degree of the all-pass filter only depends on the required steepness of the elimination characteristic and does not depend on the number of narrowband signals that should be eliminated. Moreover, it can be said that the proposed method is a suitable method for practical use since the elimination characteristic hardly influenced by the broadband signal added to the narrowband signal. Finally, the analytical results and the above mentioned feature are strictly verified by computer simulation.
Keyword (in Japanese) (See Japanese page) 
(in English) Narrowband Signal / Phase Shift / Cost Function / Exponential Filter / All-pass Filter / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 264, CAS2007-41, pp. 37-42, Oct. 2007.
Paper # CAS2007-41 
Date of Issue 2007-10-11 (CAS, NLP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee CAS NLP  
Conference Date 2007-10-18 - 2007-10-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Musashi Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To CAS 
Conference Code 2007-10-CAS-NLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Structure and Adaptive Algorithm of Adaptive Notch Filter Based on Expansion of Fourier Sine Series 
Sub Title (in English)  
Keyword(1) Narrowband Signal  
Keyword(2) Phase Shift  
Keyword(3) Cost Function  
Keyword(4) Exponential Filter  
Keyword(5) All-pass Filter  
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1st Author's Name Masaki Kobayashi  
1st Author's Affiliation Chubu University (Chubu Univ.)
2nd Author's Name Chi Wang  
2nd Author's Affiliation Chubu University (Chubu Univ.)
3rd Author's Name Yoshio Itoh  
3rd Author's Affiliation Tottori University (Tottori Univ.)
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Speaker Author-2 
Date Time 2007-10-18 11:30:00 
Presentation Time 20 minutes 
Registration for CAS 
Paper # CAS2007-41, NLP2007-69 
Volume (vol) vol.107 
Number (no) no.264(CAS), no.266(NLP) 
Page pp.37-42 
#Pages
Date of Issue 2007-10-11 (CAS, NLP) 


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